Cyclical changes in the ovary of the catfish Clarias batrachus (Linn.).
D000818:Animals; D001683:Biological Clocks; D002466:Cell Nucleolus; D004530:Egg Yolk; D005260:Female; D005399:Fishes / Q000502:physiology*; D008540:Meiosis; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology*; D012621:Seasons